Nitrogen utilization, nutrient digestibility, and excretion of purine derivatives in dairy cattle consuming rations containing corn milling co-products

Journal of Dairy Science
A M Gehman, P J Kononoff

Abstract

The objectives of this experiment were to determine the effects of feeding a combination of modified wet distillers grains with solubles (WDGS) and wet corn gluten feed (WCGF) on nutrient digestion, purine derivative excretion, and N utilization. Multiparous (n=20) and primiparous (n=20) cows were arranged in a replicated 5 x 5 Latin square with 21-d periods. Animals were fed one of 5 treatment diets during each period: 1) 0% co-products (control); 2) 15% WDGS (15WDGS); 3) 15% WCGF (15WCGF); 4) 7.5% WDGS and 7.5% WCGF (15MIX); and 5) 15% WDGS and 15% WCGF (30MIX; dry matter basis). A portion of forages, corn, and soy-based protein was replaced with WDGS, or WCGF, or both. Dry matter intake was greater for 15WDGS (25.1 kg/d) and 30MIX (25.5 kg/d) than for control (22.4 kg/d), 15WCGF (23.2 kg/d), or 15MIX (23.5 kg/d). Dry matter digestibility was greatest for 15WCGF and 30MIX (63.6 and 64.1%, respectively) and least for 15WDGS (59.8%), and neutral detergent fiber and N digestibility were greatest for 30MIX (50.7 and 68.6%, respectively) and lowest for 15WDGS (41.3 and 61.5%, respectively). Excretion of purine derivatives in urine was greater for co-product treatment diets than for control. Fecal N was greatest for 15WDGS compared...Continue Reading

References

May 1, 1997·Journal of Dairy Science·J E Nocek
Mar 18, 1999·Journal of Chromatography. B, Biomedical Sciences and Applications·K J Shingfield, N W Offer
Apr 9, 1999·Journal of Dairy Science·D J SchingoetheC P Birkelo
May 23, 2001·Journal of Agricultural and Food Chemistry·J MironD Ben-Ghedalia
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Mar 11, 2006·Journal of Dairy Science·J L FirkinsN R St-Pierre
Jun 15, 2006·Journal of Dairy Science·P J KononoffT J Klopfenstein

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Citations

Mar 26, 2013·Waste Management & Research : the Journal of the International Solid Wastes and Public Cleansing Association, ISWA·Cristina-Alejandra VillamarGladys Vidal
Feb 7, 2015·Asian-Australasian Journal of Animal Sciences·Lam Phuoc Thanh, Wisitiporn Suksombat
Feb 16, 2011·Nutrition Research Reviews·Anestis DougkasAnne M Minihane

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